Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5899161 | Ship with plane area elements which extend horizontally and are located in the hull of the ship | Hermann Herkens, Johann Wilts | 1999-05-04 |
| 5732644 | Device for the exhaust and ventilation system on ships | — | 1998-03-31 |
| 5292932 | Process for the preparation of 5-chloro-2-hydroxy-4-alkyl-benzenesulfonic acids | Wolfgang Tronich, Carl-Stephan Frohlich | 1994-03-08 |
| 5241120 | Process for the preparation of alkyl 3-chlorophenyl sulfones | Gunther Semler | 1993-08-31 |
| 4517093 | Process for the biological purification of waste water | Gerhard Leistner, Gerhard Muller, Alexander Bauer | 1985-05-14 |
| 4381268 | Device for gassing liquids or suspensions | Gerhard Muller | 1983-04-26 |
| 4251371 | Device for the biological purification of waste water | Alexander Bauer, Gerhard Leistner, Gerhard Muller | 1981-02-17 |